| 摘要 |
PROBLEM TO BE SOLVED: To further reduce the dust amount in exhaust gas buy solving the reason, in which the dust removal in an electric dust collector can not be improved by stabilizing to not less than a fixed value even in the case of limiting the contents of alkaline metal, halogen and oil contained in a sintering material. SOLUTION: The dust concentration in the exhaust gas is measured at the inlet of the electric dust collector in a sintering machine and the influential factor of the dust amount developed from the sintering raw material in the sintering process, is controlled so as to involve the dust concentration into a prescribed range and thus, the total concentrations of the alkaline metal, etc. contained in the dust caught with the electric dust collector and the highly efficient drive in the electric dust collector can be carried out. As the influential factor of the dust developed amount, at least one of among the additional ratio of granulating binder and the additional ratio of moisture and the granulating time in the process of granulating the material, is controlled. At this time, as the granulating binder, lime is used.
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